From Curious Droid.

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In 1965 the most powerful Solid Rocket Motor ever built was created by Aerojet and tested by NASA as a backup to the F-1 engine for the Saturn V. It had a thrust 3.5 times that of the F-1 and yet it was never used, but it’s successor nearly 20 years later provided 85% of the thrust for the space shuttle. This is the story of the Solid Rocket Motors and why we won’t see the very largest of these in the future.

Written researched and presented by Paul Shillito
Images and footage : SpaceX, NASA, Morten Schultz – Hunting and outdoor, Aerojet, Thiokol

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